Incremental Output from Source about denite.nvim HOT 6 CLOSED

There seems no easy way to implement this in Python3, if we don't want to drop support for 3.3-. Pyhton's standard library is poor, asycio is not available until 3.4. For compatibility we can use process.stdout.readline but it will still hang if process underlying has no output at all. But even if we do use asyncio it will require a huge rewriting.

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Yes. It is already on the todo list.

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@Shougo maybe convert to generator the gather_candidates methods then add lines to denite buffer with some kind of events or callbacks.

Maybe something more complex is to use async and generators but we need python 3.5

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I have implemented the asynchronous.
But Popen.communicate() does not return the incremental output.

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@Shougo I will take a look at it today and try and submit a PR. I have some time today.

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I will use Vim8/neovim job API for it.

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